timer broken (was Re: fc5 hangs)

[David L]

>
>>>David L wrote:
>>>
>>>>>The timer interrupt is incrementing very slowly.  Instead of 1000
>>>>>Hz it's incrementing about once or twice per minute.  What would
>>>>>cause that?  I had ntpd running, but I killed it.
>>>
>>>There's your answer - kernel bug specific to your hardware.
>>>
>>>Try downgrading your kernel to an earlier release, and see if the timer
>>>(and other issues) disappear.
>>
>>OK, I downgraded to 2.6.12 and let it run overnight.
>[snip]
>
>When I got to work, I found that X-windows had failed to start after
>downgrading to the 2.6.12 kernel.  So I tried 2.6.14 and noticed that
>udev failed to start.  So I had to bring the kernel back to 2.6.16.  I
>compiled 2.6.16.20 without ACPI and APM support and I'm trying
>that now.

Apparently all bugzilla changes in the last week were lost, so the
bug report I filed on this issue has disappeared.  What I learned
so far was that the IBM ThinkCentre had a buggy BIOS, so they asked
me to update it, which I did.  I'm trying to run the default fc5 kernel
now with the updated kernel.  Apparently newer kernels use more
of the ACPI features than older kernels and they suspected that
a buggy BIOS was to blame.

        David

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